The problem occurs when Windows Explorer fails to parse the file system correctly. Typically, a Windows folder cannot end with a period ( . ). When one does, the OS gets confused and treats it as a file type it doesn't recognize—hence the .filedot extension.
If the file is named something like WorkData. , remove the trailing dot.
Third-party file managers often ignore the naming restrictions that cause File Explorer to crash or misread files. How To Fix Error Copying File or Folder Access Is Denied filedot to folder fixed
Did this occur right after a ? (A Windows update, a power outage, or a malware scare?)
If you want, I can:
For large files (multiple GBs), browsers are not always reliable. A download manager can:
Windows will likely trigger a prompt stating: "There is already a file with the same name in this location." Click to merge or overwrite. The problem occurs when Windows Explorer fails to
Press the , type cmd , right-click Command Prompt , and select Run as administrator .